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  4. Portola Valley
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  • Five Seasons Functional Medicine cover
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    Five Seasons Functional Medicine

    Portola Valley, California
    LCF Score79/100
    Write a review
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    Address
    884 Portola Rd
    # A5
    Portola Valley, California 94028
    United States
    Get Directions
    Phone
    (650) 350-8046
    Website
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    Business Hours

    Mon8:00 AM - 3:00 PM
    Tue8:00 AM - 3:00 PM
    Wed8:00 AM - 3:00 PM
    Thu8:00 AM - 3:00 PM
    Fri8:00 AM - 3:00 PM
    SatClosed
    SunClosed

    Languages Spoken

    English
    • About the Clinic
    • Services & Treatments
    • Amenities
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    • LCF Score
    • Reviews
    Five Seasons Medical, founded by Dr. Courtney Jonson, LAc, DFM, offers a unique approach to healthcare that emphasizes the interconnectedness of the body's systems. With over 23 years of experience in functional and integrative medicine, the clinic specializes in addressing chronic illnesses, metabolic dysfunction, and autoimmune conditions by focusing on root causes rather than isolated symptoms. Dr. Jonson’s Systems That Heal™ framework blends scientific principles, nutritional strategies, and ancient medical wisdom to facilitate healing and restore the body's natural intelligence. This holistic methodology allows patients to engage in their health journeys actively, empowering them to make informed decisions about their well-being. The clinic provides a comprehensive range of services tailored to individual needs, including diagnostic evaluations, personalized dietary and lifestyle therapy, and both private and group programs. Five Seasons Medical emphasizes education through various class series that cover topics such as metabolic health, gut-immune connections, hormone health, detoxification, and the autonomic nervous system. These classes are designed to simplify complex health concepts, making them accessible and actionable for everyone. By fostering transparency and self-empowerment, the clinic not only addresses current health issues but also equips patients with the tools and knowledge necessary for long-term wellness.

    Last updated November 4, 2026

    Services & Treatments

    Functional Medicine icon

    Functional Medicine

    Amenities

    Parking Available
    Wheelchair Accessible
    Accepts Credit Cards

    Gallery

    No gallery images available at this time.

    LCF Score

    LCF Score

    79/100

    How this score works
    • Trust & Verification9/20
    • Services25/25
    • Listing Quality25/35
    • Transparency20/20

    Reviews

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    Guides for This Clinic's Treatments

    Functional Medicine for Metabolic HealthRead Guide →
    Functional Medicine for Digestive SymptomsRead Guide →
    Functional Medicine vs Primary CareRead Guide →
    Functional vs Integrative vs Naturopathic MedicineRead Guide →
    Functional Medicine Specialty Labs ExplainedRead Guide →
    “Root Cause,” Leaky Gut, and Adrenal Fatigue ClaimsRead Guide →

    Popular Treatments in Portola Valley

    Functional Medicine

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